Wide area traffic: the failure of Poisson modeling
IEEE/ACM Transactions on Networking (TON)
IEEE/ACM Transactions on Networking (TON)
Optical networks: a practical perspective
Optical networks: a practical perspective
Optical burst switching (OBS) - a new paradigm for an optical Internet
Journal of High Speed Networks - Special issue on optical networking
Just-in-time optical burst switching for multiwavelength networks
Broadband communications
A Strict Priority Scheme for Quality-of-Service Provisioning in Optical Burst Switching Networks
ISCC '03 Proceedings of the Eighth IEEE International Symposium on Computers and Communications
Optical burst switching protocols for supporting QoS and adaptive routing
Computer Communications
Lambda GLSP setup with QoS requirements in optical Internet
Computer Communications
The perspective of optical packet switching in IP dominant backbone and metropolitan networks
IEEE Communications Magazine
All-optical packet switching for metropolitan area networks: opportunities and challenges
IEEE Communications Magazine
QoS performance of optical burst switching in IP-over-WDM networks
IEEE Journal on Selected Areas in Communications
Intermediate-node initiated reservation (IIR): a new signaling scheme for wavelength-routed networks
IEEE Journal on Selected Areas in Communications
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Contention resolution is a major issue in bufferless optical burst switching (OBS) networks. The existing contention resolution schemes consider priority and arrival time to resolve contention. For most multimedia applications priority and delay are key parameters for QoS provisioning. In this paper, we propose a new signaling protocol for reducing contention in OBS networks and consider three parameters, namely, priority of the burst, number of hops traversed, and burst size into account to resolve contention. The source node in the proposed protocol can be informed of the contention up to halfway along the path of the burst, and thus, can reschedule the burst accordingly. The scheme is adaptable to both prioritized and delay constrained traffic. We call the scheme OBS-Flex. For selecting a data channel, we propose three channel selection algorithms, namely, Least Recently Used (LRU), First Fit (FF), and Priority Set (PS). We simulate OBS-Flex and compare with preemptive priority just-enough-time (PPJET) contention resolution scheme. We show that OBS-Flex outperforms PPJET in terms of burst loss rates. For simulation, we have considered Poisson and bursty traffic models.